Shallow subsurface temperatures and some estimates of heat flow from the Colorado Plateau of northeastern Arizona

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Temperature data to depths of a few hundred meters were obtained from 29 wells in northeastern Arizona; 12 in the region surrounding the San Francisco Volcanic Field, 8 in the Black Mesa area, and 9 in the south-central Colorado Plateau which includes the White Mountains. Although there was evidence for local hydrologic disturbances in many temperature profiles, most wells provided an estimate of the conductive thermal gradient at the site. A few thermal conductivities were measured and were combined with published regional averages for the north-central part of the Colorado Plateau to produce crude estimates of regional heat flux. None ... continued below

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Pages: 112

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Sass, J.H.; Stone, C. & Bills, D.J. January 1, 1982.

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Description

Temperature data to depths of a few hundred meters were obtained from 29 wells in northeastern Arizona; 12 in the region surrounding the San Francisco Volcanic Field, 8 in the Black Mesa area, and 9 in the south-central Colorado Plateau which includes the White Mountains. Although there was evidence for local hydrologic disturbances in many temperature profiles, most wells provided an estimate of the conductive thermal gradient at the site. A few thermal conductivities were measured and were combined with published regional averages for the north-central part of the Colorado Plateau to produce crude estimates of regional heat flux. None of the wells was accessible below the regional aquifers. To these depths, heat flow in the area of the San Francisco Volcanic Field appears to be controlled primarily by regional lateral water movement having a significant downward vertical component of velocity. The mean heat flow of 27 +- 5 mWm/sup -2/ is only a third to a quarter of what we would expect in this tectonic setting. The heat that is being carried laterally and downward probably is being discharged at low enthalpy and low elevation in springs and streams of the Colorado Plateau and Mogollon Rim. In the vicinity of Black Mesa, heat-flow averages about 60 mWm/sup -2/, characteristics of the coal interior of the Colorado Plateau. North of the White Mountain Volcanic Field, the average heat flow is about 95 mWm/sup -2/.

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Pages: 112

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USGS-Open File Service, Box 25425, Denver Fed. Ctr., Denver, CO 80225.

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  • Other: DE84900471
  • Report No.: USGS-OFR-82-994
  • Grant Number: None
  • DOI: 10.2172/5566507 | External Link
  • Office of Scientific & Technical Information Report Number: 5566507
  • Archival Resource Key: ark:/67531/metadc1093185

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • January 1, 1982

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • April 9, 2018, 1:38 p.m.

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Sass, J.H.; Stone, C. & Bills, D.J. Shallow subsurface temperatures and some estimates of heat flow from the Colorado Plateau of northeastern Arizona, report, January 1, 1982; United States. (digital.library.unt.edu/ark:/67531/metadc1093185/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.